Omniverse Nexus

The Omniverse Nexus is a universe where the capital of the Empire of Arckas once resided. Through an extensive wormhole network, it is known to have once connected at least two million galaxies - one of which was the Crucible Galaxy. These connections were discovered through observation of irregularly placed tachyon particles, but with at least 100 billion galaxies in the entire Omni 01 universe, it is thought that the Empire of Arckas could have potentially been even larger.

The Omniverse Nexus was called as such because it not only connected many of the galaxies of the Omni 01 universe, but also other parallel universes that had different iterations of the Empire of Arckas. Archeologists had struggled to understand how the Empire of Arckas grew in power and scope so quickly relative to the age of the universe. The earliest evidence of the Empire of Arckas dated back ten billion years ago, back when the universe had existed for a mere three billion years. The only known life forms during this time were the Promorin who only developed space travel due to borrowing the technology from other species.

As such, the time frame was considered far too short of a timeframe for most intelligent life to have evolved let alone a universe-spanning civilization. As such, it is thought that by sharing ideas with other versions of itself from different time periods and universes, the Empire of Arckas was able to rapidly grow in what seemed like a blink of an eye in universal time spans.

The Omniverse Nexus had architecture built to exist across the ten dimensions. As such, when perceived by a normal three-dimensional life form, it would appear as bizarre anomalous formations with little rhyme or reasons. A similar phenomenon has been observed in the Locubrermour pocket dimension used by the Buyuk Empire.

Multiversal War

Puzzlingly, because of the infinite multiverse, it was initially a mystery why the Empire of Arckas was struggling with a heat death crisis at all as they could have very easily gone to other universes for more resources. The question was answered with discovery of evidence of a Multiversal War. One particular iteration of the Empire of Arckas had a god machine with a similar personality as LUCIS, but on a much larger scale. This version of the Empire of Arckas sought to conquer and expand its domain across the multiverse to essentially become infinitely powerful. It sought to dominate all universes going as far as to rewrite the laws of physics to ensure the compliance of their subjects.

It is not known how the Multiversal War ended, but Omni 01's variant of the Empire of Arckas escaped from the war by closing itself off from other universes. As such, for millions of years, they had to contend with the resources available to them in only a single universe. As such, the Heat Death Crisis would be inevitable.

Heat Death Crisis

Eventually, the Empire of Arckas was forced to abandon much of their megastructures due to the massive amount of energy they were consuming. At risk of accelerating the heat death of the universe, the rulers of the empire collectively decided that it was best to peacefully dismantle their civilization. Citizens were given the choice to either leave to other universes or stay behind in Omni 01, but after a certain amount of time, the Omniverse Nexus would be closed for good. And with that, the large scale wormhole network that connected the entire universe and the connections from Omni 01 to other universes.

Legacy

With the departure of so many species, many of which originating from other universes, the Empire of Arckas ensured the continuation of organic life via artificial panspermia. They used the Omniverse Nexus one last time to plant seeds of life across multiple planets in the universe so that their descendants could one day see a galactic community on the scale of the one they created. This provides a xenobiological reason why the Crucible Galaxy seems to have an improbably high rate of intelligent life development. Under normal circumstances, only about twelve space faring civilizations would have been active in the Crucible Galaxy at any given time, but thanks to the efforts of the Empire of Arckas, that number became several hundred.

The only remnants of the Omniverse Nexus would be Na'zrah himself and the Stone Rings which provided intragalactic transport. However, legends and mythology for many species across the galaxies spoke of celestial entities and ancient god-like beings that brought life to the universe.